Carriage; snare (4)
I believe the answer is:
trap
I believe this is a double definition.
'carriage' is the first definition.
(I know that trap is a type of carriage)
'snare' is the second definition.
(I know that snare can be written as trap)
(Other definitions for trap that I've seen before include "Snaring device" , "one would be ill advised to enter?" , "Light carriage; ensnare" , "It commonly has a role in speaking" , "Pitfall" .)